Manufacture of titanium sulfate



Patented Oct. 27, 1925.

UNITED STATES HERBERT N. McOOY, or CHICAGO, rumors, ASSIGNO PATENTOFFICE.

OF CHICAGO, ILLINOIS, AOORPORATION OF ILLINOIS.

MANUFACTURE OF TITANIUM SULFATE.

No Drawing.

To all whom it'may concern:

Be it known that I, HERBERT N. McCoY, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented anew and useful Im- I .provement in Manufacture of TitaniumSulare, of which the following is a specifications This inventionrelates to the manufacture of titanium sulfate from the insoluble basicsulfate and will be fully understood from the following descriptionthereof.

. sulfuric acid. say 95 to 98% strength. In

It has hitherto been customary to effect the conversion of basictitanium sulfate into soluble titanium (tetravalent) sulfate by longconti'nued heating with concentrated 'In carrymg out the reaction, basictitanium sulfate, generally containing such amounts of water as areretained 1n filter pressing it, is admixed with some concentratedsulfuric acid, the proportion used being'materially less than thatrequired for the formation of the sulfate. Fuming sulfuric acidcontaining at least 5% rexcess S0,, and preferably 20%, is then added inquantities at least suflicientto convert all of the titanium to Ti(SO,'),. A vi orous reaction ensues-with great evolution 0 heat,

and the reaction is completed in a very short time, say 15 1'1020minutes, without the use of extraneous heat. A viscous, sirupy mass .oftitanium sulfate is formed, which may be readily dissolved in water.

Application filed June 14, 1924. Serial No. 720,182.

If zclesired, the sulfuric acid may be oniits 'ro LINDSAY mus GOMIANY,

ted, and the fuming acid alone used. In

general, it is preferred that the quantity of fuming acid used shall beat least equal to the quantity of concentrated acid used when the basicsulfate employed contains not over 50% of moisture. As is readilyapparent, the relative proportions of concentrated and fuming acid maybe widelyvaried, in general larger proportions of fuming acid beingadvantageous with higher moisture content of the basic sulfate.-

The following'specific example illustrates the manner in wh ch theinvention may be carried out:

One hundred pounds of precipitated basic titanium Y sulfate, containingabout 50% moisture,'are mixed with 50 pounds concentrated sulfuric acid(about 95%), and about 60 pounds of fuming sulfuric acid containingabout 20% excess SO are then immediately run in. The reaction proceedsvigor- -ously, and in about 15 or 20 minutes is complete', a sirupy.mass of soluble titanium sulfate being formed.

I claim: 1.- The method of forming soluble titanic sulfate consisting inreacting upon basic titanium sulfate with, fuming sulfuric acid.

sulfate with concentratedsulfuricv acid and adding thereto fumingsulfuric acid, thev total quantity of concentrated and 2. The method offorming soluble t1tanic sulfate consisting in mixing basic titanium gacids being suflicient to supply'the acid re-f quired to form titanicsulfate. 8. The method of forming sulfate consisting in reacting. u 11basic soluble titanic titanium sulfate with fuming sul ric acid in thepresence of water.

4. The method of forming soluble titanic sulfate consisting in mixingmoisture containing basic titanium sulfate with concen-' trated sulfuricacid and adding thereto fuming sulfuric acid.

HERBERT n. McOOY.

